Chip Grandits wrote:
>     <xs:unique name="oneCustomerOrdersforEachCustomerID">
>       <xs:selector xpath="mstns:customerOrders"/>
>       <xs:field xpath="@customerID"/>
>     </xs:unique>
> 
> Now below is a very simple XML instance document that I believe
> violates the requirement that Customer IDs be unique for the
> CustomerOrders children of the ordersByCustomer element.
> 
> <?xml version="1.0" encoding="utf-8"?>
> <ordersByCustomer xmlns="http://tempuri.org/myschema/unique">
>   <customerOrders CustomerID="1">
>     <item itemID="442"/>
>     <item itemID="443"/>
>   </customerOrders>
>   <customerOrders CustomerID="2">
>     <item itemID="444"/>
>     <item itemID="252"/>
>   </customerOrders>
>   <!-- DELIBERATE VIOLATION? repeating CustomerID-->
>   <customerOrders CustomerID="1">
>     <item itemID="282"/>
>     <item itemID="114"/>
>   </customerOrders>
> </ordersByCustomer>

XML is case-sensitive. 'CustomerID' is not the same thing as
'customerID'.

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